Woman, named as Rita, was last seen at 10.20am on Saturday and may be wearing a fleece jumper with a leaf design
Mountain rescue teams in the Brecon Beacons and nearby residents have been helping out in searches for a missing 96-year-old woman who has not been seen for more than 24 hours.
Dyfed-Powys police in south Wales said on Sunday they were becoming increasingly concerned for the woman, whom they named as Rita, but did not give her surname.